Sleeper hit "The Hangover," which became the top-grossing R-rated comedy of all time this summer, is due on DVD and Blu-ray on December 15, but Justin fans won't have to wait long to have him back in theaters. He's starring in the romantic comedy, "The Rebound," opposite Catherine Zeta-Jones next year, as well as festival film "Holy Rollers" – a drug drama based on true events within the Hasidic Jewish community in New York.

"It's a gritty drama," Justin said, comparing the indie film to '70s fare such as "Mean Streets." "Not a comedy at all. It's competing at Sundance."

As for his other sequel options, Justin said he'd considered doing a third "National Treasure" movie, if the script was right and star Nicolas Cage returned.

"Never say never," he said, "I had a lot of fun making those movies."

Nicolas has had a tough time of it recently, with lawsuits and his father's passing, but Justin said he was handling his adversity well.

"We traded voice mails a little while ago when his father passed away," Justin said. "I left him a message with my condolences. He's such a great guy and with the amount of success he has, there's going to be strange stuff in the tabloid culture."